The latest MMAWeekly World MMA Rankings were released on Sunday, May 31. This system ranks the Top 10 MMA fighters from all across the world in each of the seven most widely accepted weight classes.

Taken into consideration are a fighter's performance in addition to his win-loss record, head-to-head and common opponents, difficulty of opponents, and numerous other factors in what is the most comprehensive rankings system in the sport.

Fighters who are currently serving drug-related suspensions are not eligible for Top 10 consideration until they have fought one time after the completion of their suspension.

Fighters must also have competed within the past 12 months in order to be eligible for Top 10 consideration.

Below are the current MMAWeekly World MMA Rankings, which are up-to-date as of May 31.

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HEAVYWEIGHT DIVISION (over 205 pounds)

#1 Heavyweight Fighter in the World: Fedor Emelianenko

2. Josh Barnett
3. Frank Mir
4. Andrei Arlovski
5. Antonio Rodrigo Nogueira
6. Randy Couture
7. Tim Sylvia
8. Mirko “Cro Cop” Filipovic
9. Brock Lesnar
10. Fabricio Werdum

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LIGHT HEAVYWEIGHT DIVISION (205-pound limit)

#1 Light Heavyweight Fighter in the World: Lyoto Machida

2. Rashad Evans
3. Forrest Griffin
4. Quinton Jackson
5. Mauricio "Shogun" Rua
6. Antonio Rogerio Nogueira
7. Wanderlei Silva
8. Keith Jardine
9. Thiago Silva
10. Renato "Babalu" Sobral

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MIDDLEWEIGHT DIVISION (185-pound limit)

#1 Middleweight Fighter in the World: Anderson Silva

2. Robbie Lawler
3. Yushin Okami
4. Nathan Marquardt
5. Jorge Santiago
6. Dan Henderson
7. Vitor Belfort
8. Kazuo Misaki
9. Yoshihiro Akiyama
10. Demian Maia

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WELTERWEIGHT DIVISION (170-pound limit)

#1 Welterweight Fighter in the World: Georges St. Pierre

2. Jon Fitch
3. Thiago Alves
4. Jake Shields
5. Josh Koscheck
6. Matt Hughes
7. Martin Kampmann
8. Carlos Condit
9. Nick Thompson
10. Mike Swick

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LIGHTWEIGHT DIVISION (160-pound limit)

#1 Lightweight Fighter in the World: Shinya Aoki

2. Eddie Alvarez
3. B.J. Penn
4. Tatsuya Kawajiri
5. Joachim Hansen
6. Kenny Florian
7. Gesias "JZ" Calvancante
8. Josh Thomson
9. Frankie Edgar
10. Satoru Kitaoka

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FEATHERWEIGHT DIVISION (145 pound-limit)

#1 Featherweight Fighter in the World: Mike Brown

2. Urijah Faber
3. Hatsu Hioki
4. Wagnney Fabiano
5. "Lion" Takeshi Inoue
6. Jose Aldo
7. Raphael Assuncao
8. Leonard Garcia
9. Joe Warren
10. Antonio Carvalho

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BANTAMWEIGHT DIVISION (135 pounds or less)

#1 Featherweight Fighter in the World: Miguel Torres

2. Brian Bowles
3. Masakatsu Ueda
4. Takeya Mizugaki
5. Akitoshi Tamura
6. Will Ribeiro
7. Damacio Page
8. Joseph Benavidez
9. Manny Tapia
10. Marcos Galvao

Seems pretty fair imo, except for Tim Sylvia ranked in top 10.

Frank Mir vs. Josh Barnett would be an awesome fight!